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/*
* udev.h
*
* Userspace devfs
*
* Copyright (C) 2003 Greg Kroah-Hartman <greg@kroah.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation version 2 of the License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#ifndef UDEV_H
#define UDEV_H
#include <stdlib.h>
#include <string.h>
#include <sysfs/libsysfs.h>
#include <stddef.h>
#include <sys/param.h>
#define COMMENT_CHARACTER '#'
#define NAME_SIZE 100
#define OWNER_SIZE 30
#define GROUP_SIZE 30
#define MODE_SIZE 8
#define ACTION_SIZE 30
#define DEVPATH_SIZE 255
#define SUBSYSTEM_SIZE 30
/* length of public data */
#define UDEVICE_LEN (offsetof(struct udevice, bus_id))
struct udevice {
char name[NAME_SIZE];
char owner[OWNER_SIZE];
char group[GROUP_SIZE];
char type;
int major;
int minor;
unsigned int mode; /* not mode_t due to conflicting definitions in different libcs */
char symlink[NAME_SIZE];
int partitions;
/* private data that help us in building strings */
char bus_id[SYSFS_NAME_LEN];
char program_result[NAME_SIZE];
char kernel_number[NAME_SIZE];
char kernel_name[NAME_SIZE];
};
#define strfieldcpy(to, from) \
do { \
to[sizeof(to)-1] = '\0'; \
strncpy(to, from, sizeof(to)-1); \
} while (0)
#define strfieldcat(to, from) \
do { \
to[sizeof(to)-1] = '\0'; \
strncat(to, from, sizeof(to) - strlen(to)-1); \
} while (0)
#define strnfieldcpy(to, from, maxsize) \
do { \
to[maxsize-1] = '\0'; \
strncpy(to, from, maxsize-1); \
} while (0)
#define strnfieldcat(to, from, maxsize) \
do { \
to[maxsize-1] = '\0'; \
strncat(to, from, maxsize - strlen(to)-1); \
} while (0)
static inline char *get_action(void)
{
char *action;
action = getenv("ACTION");
if (action != NULL && strlen(action) > ACTION_SIZE)
action[ACTION_SIZE-1] = '\0';
return action;
}
static inline char *get_devpath(void)
{
char *devpath;
devpath = getenv("DEVPATH");
if (devpath != NULL && strlen(devpath) > DEVPATH_SIZE)
devpath[DEVPATH_SIZE-1] = '\0';
return devpath;
}
static inline char *get_seqnum(void)
{
char *seqnum;
seqnum = getenv("SEQNUM");
return seqnum;
}
static inline char *get_subsystem(char *subsystem)
{
if (subsystem != NULL && strlen(subsystem) > SUBSYSTEM_SIZE)
subsystem[SUBSYSTEM_SIZE-1] = '\0';
return subsystem;
}
extern int udev_add_device(char *path, char *subsystem, int fake);
extern int udev_remove_device(char *path, char *subsystem);
extern void udev_init_config(void);
extern int parse_get_pair(char **orig_string, char **left, char **right);
extern char **main_argv;
extern char **main_envp;
extern char sysfs_path[SYSFS_PATH_MAX];
extern char udev_root[PATH_MAX];
extern char udev_db_filename[PATH_MAX+NAME_MAX];
extern char udev_permissions_filename[PATH_MAX+NAME_MAX];
extern char udev_config_filename[PATH_MAX+NAME_MAX];
extern char udev_rules_filename[PATH_MAX+NAME_MAX];
extern char default_mode_str[MODE_SIZE];
extern char default_owner_str[OWNER_SIZE];
extern char default_group_str[GROUP_SIZE];
extern int udev_log;
extern int udev_sleep;
#endif
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